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Erschienen in:
Error Analysis for Shock Equation of State Measurements in Polymers Using Manganin Gauges Kapitel lesen Erstes Kapitel lesen

2019 | OriginalPaper | Buchkapitel

38. A Novel Auxetic Structure with Enhanced Impact Performance by Means of Periodic Tessellation with Variable Poisson’s Ratio

verfasst von : M. Taylor, L. Francesconi, A. Baldi, X. Liang, F. Aymerich

Erschienen in: Dynamic Behavior of Materials, Volume 1

Verlag: Springer International Publishing

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Abstract

This study proposes a new approach to designing impact resistant elastomeric structures using innovative bi-dimensional patterns composed of a combination of circular and elliptical voids with variable aspect ratios. Key to the design are discrete sections each with different effective Poisson’s ratios ranging from negative to positive. Cubic samples 80 × 80 × 80 cm in size with different void geometry and effective Poisson’s ratios were fabricated and successively tested under compressive and low-velocity impact loads as a proof-of-concept, showing good agreement with finite element simulations.
The numerical comparisons for different porosity levels demonstrated that the variable Poisson’s ratio materials resulted in better impact responses compared to those characterized by a positive (constant) value of the effective Poisson’s ratio. The promising results also show that the variable shape of the voids can lead to a modular trigger of overall effective auxetic behavior, opening up new ways design and use auxetic macro-structures with variable porosity and variable Poisson’s ratio for a wide range of applications and, in particular, for impact and protecting devices.

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Vorheriges Kapitel Investigating the Mechanical and Thermal Relationship for Epoxy Blends
Nächstes Kapitel On the Response of Polymer Bonded Explosives at Different Impact Velocities
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Metadaten
Titel
A Novel Auxetic Structure with Enhanced Impact Performance by Means of Periodic Tessellation with Variable Poisson’s Ratio
verfasst von
M. Taylor
L. Francesconi
A. Baldi
X. Liang
F. Aymerich
Copyright-Jahr
2019
Buch
Dynamic Behavior of Materials, Volume 1

Print ISBN: 978-3-319-95088-4

Electronic ISBN: 978-3-319-95089-1

Copyright-Jahr: 2019

DOI
https://doi.org/10.1007/978-3-319-95089-1_38

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